<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <script src="../00.依赖包/react.development.js"></script>
  <script src="../00.依赖包/react-dom.development.js"></script>
  <script src="../00.依赖包/babel.min.js"></script>
</head>

<body>
  <div id="app"></div>
  <script type="text/babel">
    class App extends React.Component{
      
      //状态机 是实列的属性
      state={
        count:0,
        isHot:true
      }

      render(){
        console.log('render渲染');
        //解构赋值
        const{count,isHot} = this.state
            if(isHot){
              return(
                <div>
                  <h1>天气真热啊</h1>
                  <p>热的雪糕都化不了</p>
                </div>
              )}else{
                return(
                  <div>
                  <h1>天气真冷啊</h1>
                  <p>热的雪糕都化了</p>
                </div>
                )
            }
          
          
        
      }
     
    
    }
   


    const root = ReactDOM.createRoot(document.getElementById('app'));
    root.render(<App/>)
  </script>
</body>

</html>